Cylindrical lithium battery power battery assembly and lithium electric vehicle

Abstract

The invention discloses a cylindrical lithium battery power battery assembly and a lithium electric vehicle, wherein the cylindrical lithium battery power battery assembly includes a shell, an inorganic foam bracket, a heat dissipation sleeve, an upper cover and a lower A number of first circular holes penetrating from top to bottom are evenly arranged in the bubble bracket, a heat dissipation sleeve is installed in each of the first circular holes, and a battery cell is installed in each heat dissipation sleeve; the housing is composed of The first and second sub-housings are relatively fastened together; an upper cover and a lower cover are clamped and fixed on the two sub-housings respectively, the closing port on the upper cover is the cold air inlet, and the opening on the lower cover is The interface is the hot air outlet. The invention has good anti-explosion performance. During the self-explosion process of the electric core, the foamed support can undergo crushing self-destruction, absorb explosion energy, absorb impact energy, and improve the safety performance of the new energy vehicle.

Description

technical field [0001] The invention relates to the technical field of power batteries, specifically cylindrical lithium battery cell power battery assemblies and lithium electric vehicles. Background technique [0002] At present, lithium-ion power batteries are popular in my country, and lithium iron phosphate batteries refer to lithium-ion batteries that use lithium iron phosphate as the positive electrode material. [0003] There are many kinds of positive electrode materials for lithium-ion batteries, mainly including lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobaltate is currently the positive electrode material used in most lithium-ion batteries, while other positive electrode materials have not been mass-produced in the market due to various reasons. Lithium iron phosphate is also one of the lithium-ion batteries. In terms of the principle of materials, lithium iron phosp...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the deficiencies of the prior art, the present invention provides a cylindrical lithium cell power battery assembly and a lithium electric vehicle, firstly used to solve the problem of insufficient heat dissipation between the cells in the battery pack, and to provide a battery within a certain temperature range Controllable power battery assembly with approximately constant temperature, while solving the problem of cell dislocation caused by cell heating and expansion, looking for a cheap, anti-explosion, non-combustible cell support, at the same time, easy to assemble and produce, modular, Compact structure, lower usage and manufacturing costs

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